/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:11:29,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:11:29,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:11:29,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:11:29,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:11:29,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:11:29,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:11:29,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:11:29,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:11:29,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:11:29,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:11:29,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:11:29,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:11:29,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:11:29,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:11:29,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:11:29,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:11:29,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:11:29,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:11:29,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:11:29,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:11:29,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:11:29,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:11:29,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:11:29,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:11:29,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:11:29,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:11:29,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:11:29,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:11:29,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:11:29,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:11:29,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:11:29,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:11:29,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:11:29,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:11:29,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:11:29,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:11:29,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:11:29,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:11:29,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:11:29,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:11:29,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:11:29,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:11:29,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:11:29,953 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:11:29,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:11:29,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:11:29,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:29,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:11:29,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:11:29,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:11:29,955 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:11:30,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:11:30,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:11:30,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:11:30,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:11:30,404 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:11:30,405 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-04 16:11:30,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a72541c/97ecf62115c7456e98e4ece0ed4bb85f/FLAGee33f93fd [2020-09-04 16:11:31,061 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:11:31,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-04 16:11:31,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a72541c/97ecf62115c7456e98e4ece0ed4bb85f/FLAGee33f93fd [2020-09-04 16:11:31,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50a72541c/97ecf62115c7456e98e4ece0ed4bb85f [2020-09-04 16:11:31,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:11:31,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:11:31,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:31,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:11:31,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:11:31,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414e1ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31, skipping insertion in model container [2020-09-04 16:11:31,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:11:31,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:11:31,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:31,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:11:31,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:31,871 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:11:31,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31 WrapperNode [2020-09-04 16:11:31,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:31,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:11:31,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:11:31,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:11:31,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... [2020-09-04 16:11:31,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:11:31,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:11:31,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:11:31,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:11:31,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-04 16:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-04 16:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:11:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:11:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 16:11:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-04 16:11:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:11:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:11:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:11:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:11:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:11:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:11:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-04 16:11:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:11:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:11:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 16:11:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:11:32,642 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:11:32,643 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-04 16:11:32,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:32 BoogieIcfgContainer [2020-09-04 16:11:32,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:11:32,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:11:32,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:11:32,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:11:32,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:11:31" (1/3) ... [2020-09-04 16:11:32,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a2a3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:32, skipping insertion in model container [2020-09-04 16:11:32,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:31" (2/3) ... [2020-09-04 16:11:32,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a2a3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:32, skipping insertion in model container [2020-09-04 16:11:32,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:32" (3/3) ... [2020-09-04 16:11:32,669 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-04 16:11:32,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:11:32,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:11:32,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:11:32,738 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:11:32,739 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:11:32,739 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:11:32,739 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:11:32,739 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:11:32,739 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:11:32,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:11:32,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:11:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-09-04 16:11:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 16:11:32,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:32,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:11:32,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:32,781 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-09-04 16:11:32,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:32,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483639240] [2020-09-04 16:11:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:32,858 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:11:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 16:11:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:11:33,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483639240] [2020-09-04 16:11:33,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:33,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:11:33,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565009362] [2020-09-04 16:11:33,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:11:33,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:33,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:11:33,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:11:33,118 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-09-04 16:11:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:33,588 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-09-04 16:11:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:11:33,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-04 16:11:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:33,605 INFO L225 Difference]: With dead ends: 306 [2020-09-04 16:11:33,605 INFO L226 Difference]: Without dead ends: 155 [2020-09-04 16:11:33,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:11:33,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-04 16:11:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-04 16:11:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-04 16:11:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-09-04 16:11:33,679 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-09-04 16:11:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:33,679 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-09-04 16:11:33,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:11:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-09-04 16:11:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-04 16:11:33,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:33,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:11:33,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:11:33,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:33,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-09-04 16:11:33,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:33,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527774841] [2020-09-04 16:11:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:33,687 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:33,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:33,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:33,999 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:11:34,000 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:11:34,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:11:34,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:11:34 BoogieIcfgContainer [2020-09-04 16:11:34,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:11:34,056 INFO L168 Benchmark]: Toolchain (without parser) took 2655.53 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 103.7 MB in the beginning and 160.7 MB in the end (delta: -57.1 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:34,057 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:34,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 471.76 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 103.5 MB in the beginning and 182.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:34,059 INFO L168 Benchmark]: Boogie Preprocessor took 62.96 ms. Allocated memory is still 205.5 MB. Free memory was 182.8 MB in the beginning and 180.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:34,060 INFO L168 Benchmark]: RCFGBuilder took 722.38 ms. Allocated memory is still 205.5 MB. Free memory was 180.3 MB in the beginning and 144.4 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:34,061 INFO L168 Benchmark]: TraceAbstraction took 1392.01 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 143.8 MB in the beginning and 160.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:34,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 471.76 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 103.5 MB in the beginning and 182.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.96 ms. Allocated memory is still 205.5 MB. Free memory was 182.8 MB in the beginning and 180.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 722.38 ms. Allocated memory is still 205.5 MB. Free memory was 180.3 MB in the beginning and 144.4 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1392.01 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 143.8 MB in the beginning and 160.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...